41
VC-A582U
VC-A582U(A)
VC-H982U
FLOW CHART NO.10 LOADING MOTOR AND EJECT TROUBLESHOOTING
The cassette tape fails to eject.
Does the capstan motor start when
the EJECT button is pressed?
See FLOW CHART NO.12.
(CAPSTAN MOTOR TROUBLE
SHOOTING)
Does the take-up reel disk turn when
the capstan motor is running?
Check reel disk and reel drive unit.
Are pulses applied at pin(2) of IC701
when the take-up reel disk is turning?
Check take-up reel sensor and all the
way up thru to IC701.
Is a "H"(about 1.7V) level applied at
pin(4) of IC703 when a reel pules
has been inputted?
Check pin(92) of IC701.
Is the voltage about 10V sent out of
pin(7) of IC703?
Check IC703.
Is the specified voltage applied at the
loading motor terminal?
Check between IC703 and all the
way up thru to the loading motor.
Dose the loading motor run?
Replace loading motor.
Replace cassette cam,gear, etc.
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
FLOW CHART NO.11 SYSTEM CONTROL TROUBLESHOOTING
No power is turned on.
Are key data pulses applied at pin
(15) of IC701, respectively?
Check IC801 and IC701, and all
the way thru between them.
Are FLP data pulses, FLP clock pulses and FLP control ready pulses applied to pins(24),(23)
and (22) of I801, respectively?
Does power control(H) signal at pin
(94) of IC701 change from "L" to "H"
level?
Check IC701.
Does the base of Q951 change from
about 2.0V to 5.0V?
Check Q951 and all the way up thru
to Q952.
Is 5V sent out of the emitter of Q951?
Check Q951 and the AT 5V line.
Check periperal circuits for poor
soldering.
Содержание VC-A582U
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